Senate leaders compromised on a deal to fast-track President Barack Obama’s trade initiative after Senate Democrats rejected the president’s original proposal. Manu Raju of POLITICO explains how the compromise came together.

Iraqi Prime Minister Haider al-Abadi is heading to Washington to ask President Obama for weapons and other support to fight the Islamic State. Special correspondent Jane Arraf, reporting from Baghdad, joins Gwen Ifill to discuss Abadi’s requests and the counterattack against the Islamic State’s strongholds in Anbar province.

While Congress accomplished a lot this week, they did not act on the nomination of Loretta Lynch, the woman the president has selected to succeed Eric Holder as Attorney General.

Heavy fighting continued in the Iraqi city of Tikrit, as Iraqi forces and militias moved in on the Islamic State group. Meanwhile, 25 Iraqi soldiers were killed in a friendly fire incident involving an aircraft from the U.S.-led coalition against the militants. Gwen Ifill gets an update on both stories from special correspondent Jane Arraf in Iraq.

The murder of Egyptian Christian hostages by the Islamic State in Libya raises the alarm that the militant group is expanding from its territory in Syria and Iraq. Gwen Ifill talks to Frederic Wehrey of the Carnegie Endowment for International Peace and Michael Leiter, former director of the National Counterterrorism Center.

President Obama is officially asking Congress to authorize military action against the Islamic State militant group. Obama's three-year proposal would limit the use of ground troops in the fight. The proposed legislation is receiving mixed reviews on Capitol Hill where debate is expected in the next few weeks. Democrats want to limit the use of ground troops while Republicans want to give the president flexibility in the fight against ISIS. This formal request for military force would repl...

On the Webcast Extra, jury selection began in the trial of accused Boston Marathon bomber Dzhokhar Tsarnaev. Over 1200 potential jurors have been summoned in a process that could take three weeks in the death penalty case. Plus, former CIA Director David Petraeus could face felony charges for giving classified information to his mistress.

After U.S. forces kill Osama bin Laden, America rejoices but the war on terror continues. The panel looks at the intelligence that led to bin Laden, the political and national security impact, and the strained US-Pakistan relationship. Joining guest host, Gloria Borger: James Kitfield, National Journal, Tom Gjelten, NPR, Peter Baker, New York Times, and Charles Babington, AP.

This week, we look back at 2011 and forward to 2012. We'll analyze battles between Congress and the President, the economy, the killing of Osama bin Laden, the pullout of US troops in Iraq while fighting continues in Afghanistan, and more. Joining Gwen: Helene Cooper, New York Times; Michael Duffy, Time Magazine; Doyle McManus, Los Angeles Times; David Wessel, Wall Street Journal.

According to a new survey, 89 percent of Iraq and Afghanistan War veterans say they would join the military again, while also reporting a spike in suicide, reduced physical wellness and feelings of disconnection. Gwen Ifill talks to two veterans, Tom Tarantino of Iraq and Afghanistan Veterans of America and Nathan Smith of Hire Heroes USA, as well as Rajiv Chandrasekaran of The Washington Post.